/**
 * 
 */
function send_onlinenum() {
    	$.ajax({
            "url": '/forum//onlineInfo/online_userStatistics.action',
            "type": 'POST',
            "dataType": 'json',
            "contentType":"application/x-www-form-urlencoded; charset=UTF-8",
            "success":function(data){
            	online_num.innerHTML = data.onineN;
            },
            "error":function(){
                console.log("网络错误！");
            }
        });
}